<template>
  <view class="goods-container"  v-if="goodsDetail.goods_price" style="background-color: white;">
    <!-- 轮播图信息 -->
    <view class="goods-detail">
      <swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" circular="true">
        <swiper-item v-for="(item, i) in goodsDetail.pics" :key="i">
          <image class="swiper-img" :src="item.pics_big" @click="preview(i)"></image>
        </swiper-item>
      </swiper>
    </view>
    <!-- 商品信息区域 -->
    <view class="goods-info">
      <!-- 价格 -->
      <view class="price">￥{{goodsDetail.goods_price}}</view>
      <!-- 名称信息 -->
      <view class="goods-info-body">
        <view class="goods-name">{{goodsDetail.goods_name}}</view>
        <!-- 收藏 -->
        <view class="favi">
          <uni-icons type="star" color="gray" size="18"></uni-icons>
          <text>收藏</text>
        </view>
      </view>
      <!-- 运费 -->
      <view class="yf">快递：免运费</view>
    </view>
    <!-- 详情信息 -->
    <view>
      <rich-text :nodes="goodsDetail.goods_introduce"></rich-text>
    </view>
    <!-- 商品导航区 -->
    <view class="goods-nav">
      <uni-goods-nav :fill="true"  :options="options" :buttonGroup="buttonGroup"  @click="onClick" @buttonClick="buttonClick" />
    </view>
    
  </view>
</template>

<script>
  import { mapState, mapMutations, mapGetters } from 'vuex'
  export default {
    data() {
      return {
        // 商品信息数据
        goodsDetail: {},
        // 商品导航栏数据
        options: [ {
        			icon: 'shop',
        			text: '店铺',
        			infoBackgroundColor:'#007aff',
        			infoColor:"red"
        		}, {
        			icon: 'cart',
        			text: '购物车',
        			info: 0
        		}],
        	    buttonGroup: [{
        	      text: '加入购物车',
        	      backgroundColor: '#ff0000',
        	      color: '#fff'
        	    },
        	    {
        	      text: '立即购买',
        	      backgroundColor: '#ffa200',
        	      color: '#fff'
        	    }
        	    ]
      };
    },
    onLoad(options) {
      const goods_id = options.goods_id
      // 调用商品详情的方法
      this.getGoodsDetail(goods_id)
    },
    computed: {
      ...mapGetters('m_cart', ['total'])
    },
    watch: {
      // total(newVal) {
      //   const findInfo = this.options.find(item => item.text === '购物车')
      //   if (findInfo) {
      //     findInfo.info = newVal
      //   }
      // }
      total: {
        handler(newVal) {
          const findInfo = this.options.find(item => item.text === '购物车')
          if (findInfo) {
            findInfo.info = newVal
          }
        },
        // immediate表示首页初次加载就调用
        immediate: true
      }
    },
    methods: {
      ...mapMutations('m_cart', ['addCart']),
      // 获取商品详情的方法
      async getGoodsDetail(goods_id) {
        const { data: res } = await uni.$http.get(`/api/public/v1/goods/detail`, { goods_id })
        if (res.meta.status !== 200) return uni.$showMsg()
        // 这里是对图片img进行添加属性 防止底部出现白边
        res.message.goods_introduce = res.message.goods_introduce.replace(/<img /g, '<img style="display: block;"').replace(/webp/g, 'jpg')
        this.goodsDetail = res.message
      },
      // 点击显示大图
      preview(i) {
        uni.previewImage({
          current: i,
          urls: this.goodsDetail.pics.map(item => item.pics_big)
        })
      },
      // 点击购物车跳转购物车页面
      onClick(e) {
        console.log(e);
        if (e.content.text === '购物车') {
          uni.switchTab({
            url: '/pages/cart/cart'
          })
        }
      },
      // 点击加入购物按钮
      buttonClick(e) {
        if (e.content.text === '加入购物车') {
          const goods = {
            // { goods_id, goods_name, goods_price, goods_count, goods_small_logo, goods_state }
            goods_id: this.goodsDetail.goods_id,
            goods_name: this.goodsDetail.goods_name,
            goods_price: this.goodsDetail.goods_price,
            goods_count: 1,
            goods_small_logo: this.goodsDetail.goods_small_logo,
            goods_state: true,
          }
            // 调用vuex的方法添加数据
            this.addCart(goods)
        }
      }
      
    }
    
  }
</script>

<style lang="scss" scoped>
  .goods-container{
    margin-bottom: 50px;
  }
  swiper{
    height: 750rpx;
    .swiper-img{
      width: 100%;
      height: 100%;
      box-sizing: border-box;
    }
  }
.goods-info{
  padding: 10px;
  padding-right: 0;
  .price{
    font-size: 18px;
    color: #c00000;
    margin: 10px 0;
  }
  .goods-info-body{
    display: flex;
    justify-content: space-between;
    .goods-name{
      font-size: 13px;
      margin-right: 10px;
    }
    .favi{
      width: 120px;
      font-size: 12px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      color: gray;
      border-left: 1px solid #ccc;
    }
  }
  .yf{
    font-size: 12px;
    color: gray;
    margin: 5px 0;
  }
}
.goods-nav{
  position: fixed;
  bottom: 0;
  left: 0;width: 100%;
}
</style>
